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<FONT color="green">001</FONT>    /* ========================================================================<a name="line.1"></a>
<FONT color="green">002</FONT>     * JCommon : a free general purpose class library for the Java(tm) platform<a name="line.2"></a>
<FONT color="green">003</FONT>     * ========================================================================<a name="line.3"></a>
<FONT color="green">004</FONT>     *<a name="line.4"></a>
<FONT color="green">005</FONT>     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.<a name="line.5"></a>
<FONT color="green">006</FONT>     * <a name="line.6"></a>
<FONT color="green">007</FONT>     * Project Info:  http://www.jfree.org/jcommon/index.html<a name="line.7"></a>
<FONT color="green">008</FONT>     *<a name="line.8"></a>
<FONT color="green">009</FONT>     * This library is free software; you can redistribute it and/or modify it <a name="line.9"></a>
<FONT color="green">010</FONT>     * under the terms of the GNU Lesser General Public License as published by <a name="line.10"></a>
<FONT color="green">011</FONT>     * the Free Software Foundation; either version 2.1 of the License, or <a name="line.11"></a>
<FONT color="green">012</FONT>     * (at your option) any later version.<a name="line.12"></a>
<FONT color="green">013</FONT>     *<a name="line.13"></a>
<FONT color="green">014</FONT>     * This library is distributed in the hope that it will be useful, but <a name="line.14"></a>
<FONT color="green">015</FONT>     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY <a name="line.15"></a>
<FONT color="green">016</FONT>     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public <a name="line.16"></a>
<FONT color="green">017</FONT>     * License for more details.<a name="line.17"></a>
<FONT color="green">018</FONT>     *<a name="line.18"></a>
<FONT color="green">019</FONT>     * You should have received a copy of the GNU Lesser General Public<a name="line.19"></a>
<FONT color="green">020</FONT>     * License along with this library; if not, write to the Free Software<a name="line.20"></a>
<FONT color="green">021</FONT>     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, <a name="line.21"></a>
<FONT color="green">022</FONT>     * USA.  <a name="line.22"></a>
<FONT color="green">023</FONT>     *<a name="line.23"></a>
<FONT color="green">024</FONT>     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. <a name="line.24"></a>
<FONT color="green">025</FONT>     * in the United States and other countries.]<a name="line.25"></a>
<FONT color="green">026</FONT>     *<a name="line.26"></a>
<FONT color="green">027</FONT>     * ----------------------<a name="line.27"></a>
<FONT color="green">028</FONT>     * LineBreakIterator.java<a name="line.28"></a>
<FONT color="green">029</FONT>     * ----------------------<a name="line.29"></a>
<FONT color="green">030</FONT>     * (C)opyright 2003, by Thomas Morgner and Contributors.<a name="line.30"></a>
<FONT color="green">031</FONT>     *<a name="line.31"></a>
<FONT color="green">032</FONT>     * Original Author:  Thomas Morgner;<a name="line.32"></a>
<FONT color="green">033</FONT>     * Contributor(s):   David Gilbert (for Object Refinery Limited);<a name="line.33"></a>
<FONT color="green">034</FONT>     *<a name="line.34"></a>
<FONT color="green">035</FONT>     * $Id: LineBreakIterator.java,v 1.4 2005/11/03 09:55:26 mungady Exp $<a name="line.35"></a>
<FONT color="green">036</FONT>     *<a name="line.36"></a>
<FONT color="green">037</FONT>     * Changes<a name="line.37"></a>
<FONT color="green">038</FONT>     * -------<a name="line.38"></a>
<FONT color="green">039</FONT>     * 13-03-2003 : Initial version<a name="line.39"></a>
<FONT color="green">040</FONT>     */<a name="line.40"></a>
<FONT color="green">041</FONT>    package org.jfree.util;<a name="line.41"></a>
<FONT color="green">042</FONT>    <a name="line.42"></a>
<FONT color="green">043</FONT>    import java.util.Iterator;<a name="line.43"></a>
<FONT color="green">044</FONT>    <a name="line.44"></a>
<FONT color="green">045</FONT>    /**<a name="line.45"></a>
<FONT color="green">046</FONT>     * An iterator that breaks text into lines.<a name="line.46"></a>
<FONT color="green">047</FONT>     * The result is equal to BufferedReader.readLine().<a name="line.47"></a>
<FONT color="green">048</FONT>     *<a name="line.48"></a>
<FONT color="green">049</FONT>     * @author Thomas Morgner<a name="line.49"></a>
<FONT color="green">050</FONT>     */<a name="line.50"></a>
<FONT color="green">051</FONT>    public class LineBreakIterator implements Iterator<a name="line.51"></a>
<FONT color="green">052</FONT>    {<a name="line.52"></a>
<FONT color="green">053</FONT>      /** A useful constant. */<a name="line.53"></a>
<FONT color="green">054</FONT>      public static final int DONE = -1;<a name="line.54"></a>
<FONT color="green">055</FONT>    <a name="line.55"></a>
<FONT color="green">056</FONT>      /** Storage for the text. */<a name="line.56"></a>
<FONT color="green">057</FONT>      private char[] text;<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>      /** The current position. */<a name="line.59"></a>
<FONT color="green">060</FONT>      private int position;<a name="line.60"></a>
<FONT color="green">061</FONT>    <a name="line.61"></a>
<FONT color="green">062</FONT>      /**<a name="line.62"></a>
<FONT color="green">063</FONT>       * Default constructor.<a name="line.63"></a>
<FONT color="green">064</FONT>       */<a name="line.64"></a>
<FONT color="green">065</FONT>      public LineBreakIterator()<a name="line.65"></a>
<FONT color="green">066</FONT>      {<a name="line.66"></a>
<FONT color="green">067</FONT>        setText("");<a name="line.67"></a>
<FONT color="green">068</FONT>      }<a name="line.68"></a>
<FONT color="green">069</FONT>    <a name="line.69"></a>
<FONT color="green">070</FONT>      /**<a name="line.70"></a>
<FONT color="green">071</FONT>       * Creates a new line break iterator.<a name="line.71"></a>
<FONT color="green">072</FONT>       *<a name="line.72"></a>
<FONT color="green">073</FONT>       * @param text the text to be broken up.<a name="line.73"></a>
<FONT color="green">074</FONT>       */<a name="line.74"></a>
<FONT color="green">075</FONT>      public LineBreakIterator(final String text)<a name="line.75"></a>
<FONT color="green">076</FONT>      {<a name="line.76"></a>
<FONT color="green">077</FONT>        setText(text);<a name="line.77"></a>
<FONT color="green">078</FONT>      }<a name="line.78"></a>
<FONT color="green">079</FONT>    <a name="line.79"></a>
<FONT color="green">080</FONT>      /**<a name="line.80"></a>
<FONT color="green">081</FONT>       * Returns the position of the next break.<a name="line.81"></a>
<FONT color="green">082</FONT>       *<a name="line.82"></a>
<FONT color="green">083</FONT>       * @return A position.<a name="line.83"></a>
<FONT color="green">084</FONT>       */<a name="line.84"></a>
<FONT color="green">085</FONT>      public synchronized int nextPosition()<a name="line.85"></a>
<FONT color="green">086</FONT>      {<a name="line.86"></a>
<FONT color="green">087</FONT>        if (this.text == null)<a name="line.87"></a>
<FONT color="green">088</FONT>        {<a name="line.88"></a>
<FONT color="green">089</FONT>          return DONE;<a name="line.89"></a>
<FONT color="green">090</FONT>        }<a name="line.90"></a>
<FONT color="green">091</FONT>        if (this.position == DONE)<a name="line.91"></a>
<FONT color="green">092</FONT>        {<a name="line.92"></a>
<FONT color="green">093</FONT>          return DONE;<a name="line.93"></a>
<FONT color="green">094</FONT>        }<a name="line.94"></a>
<FONT color="green">095</FONT>    <a name="line.95"></a>
<FONT color="green">096</FONT>        // recognize \n, \r, \r\n<a name="line.96"></a>
<FONT color="green">097</FONT>    <a name="line.97"></a>
<FONT color="green">098</FONT>        final int nChars = this.text.length;<a name="line.98"></a>
<FONT color="green">099</FONT>        int nextChar = this.position;<a name="line.99"></a>
<FONT color="green">100</FONT>    <a name="line.100"></a>
<FONT color="green">101</FONT>        for (;;)<a name="line.101"></a>
<FONT color="green">102</FONT>        {<a name="line.102"></a>
<FONT color="green">103</FONT>          if (nextChar &gt;= nChars)<a name="line.103"></a>
<FONT color="green">104</FONT>          {<a name="line.104"></a>
<FONT color="green">105</FONT>            /* End of text reached */<a name="line.105"></a>
<FONT color="green">106</FONT>            this.position = DONE;<a name="line.106"></a>
<FONT color="green">107</FONT>            return DONE;<a name="line.107"></a>
<FONT color="green">108</FONT>          }<a name="line.108"></a>
<FONT color="green">109</FONT>    <a name="line.109"></a>
<FONT color="green">110</FONT>          boolean eol = false;<a name="line.110"></a>
<FONT color="green">111</FONT>          char c = 0;<a name="line.111"></a>
<FONT color="green">112</FONT>          int i;<a name="line.112"></a>
<FONT color="green">113</FONT>    <a name="line.113"></a>
<FONT color="green">114</FONT>          // search the next line break, either \n or \r<a name="line.114"></a>
<FONT color="green">115</FONT>          for (i = nextChar; i &lt; nChars; i++)<a name="line.115"></a>
<FONT color="green">116</FONT>          {<a name="line.116"></a>
<FONT color="green">117</FONT>            c = this.text[i];<a name="line.117"></a>
<FONT color="green">118</FONT>            if ((c == '\n') || (c == '\r'))<a name="line.118"></a>
<FONT color="green">119</FONT>            {<a name="line.119"></a>
<FONT color="green">120</FONT>              eol = true;<a name="line.120"></a>
<FONT color="green">121</FONT>              break;<a name="line.121"></a>
<FONT color="green">122</FONT>            }<a name="line.122"></a>
<FONT color="green">123</FONT>          }<a name="line.123"></a>
<FONT color="green">124</FONT>    <a name="line.124"></a>
<FONT color="green">125</FONT>          nextChar = i;<a name="line.125"></a>
<FONT color="green">126</FONT>          if (eol)<a name="line.126"></a>
<FONT color="green">127</FONT>          {<a name="line.127"></a>
<FONT color="green">128</FONT>            nextChar++;<a name="line.128"></a>
<FONT color="green">129</FONT>            if (c == '\r')<a name="line.129"></a>
<FONT color="green">130</FONT>            {<a name="line.130"></a>
<FONT color="green">131</FONT>              if ((nextChar &lt; nChars) &amp;&amp; (this.text[nextChar] == '\n'))<a name="line.131"></a>
<FONT color="green">132</FONT>              {<a name="line.132"></a>
<FONT color="green">133</FONT>                nextChar++;<a name="line.133"></a>
<FONT color="green">134</FONT>              }<a name="line.134"></a>
<FONT color="green">135</FONT>            }<a name="line.135"></a>
<FONT color="green">136</FONT>            this.position = nextChar;<a name="line.136"></a>
<FONT color="green">137</FONT>            return (this.position);<a name="line.137"></a>
<FONT color="green">138</FONT>          }<a name="line.138"></a>
<FONT color="green">139</FONT>        }<a name="line.139"></a>
<FONT color="green">140</FONT>      }<a name="line.140"></a>
<FONT color="green">141</FONT>    <a name="line.141"></a>
<FONT color="green">142</FONT>      /**<a name="line.142"></a>
<FONT color="green">143</FONT>       * Same like next(), but returns the End-Of-Text as<a name="line.143"></a>
<FONT color="green">144</FONT>       * if there was a linebreak added (Reader.readLine() compatible)<a name="line.144"></a>
<FONT color="green">145</FONT>       *<a name="line.145"></a>
<FONT color="green">146</FONT>       * @return The next position.<a name="line.146"></a>
<FONT color="green">147</FONT>       */<a name="line.147"></a>
<FONT color="green">148</FONT>      public int nextWithEnd()<a name="line.148"></a>
<FONT color="green">149</FONT>      {<a name="line.149"></a>
<FONT color="green">150</FONT>        final int pos = this.position;<a name="line.150"></a>
<FONT color="green">151</FONT>        if (pos == DONE)<a name="line.151"></a>
<FONT color="green">152</FONT>        {<a name="line.152"></a>
<FONT color="green">153</FONT>          return DONE;<a name="line.153"></a>
<FONT color="green">154</FONT>        }<a name="line.154"></a>
<FONT color="green">155</FONT>        if (pos == this.text.length)<a name="line.155"></a>
<FONT color="green">156</FONT>        {<a name="line.156"></a>
<FONT color="green">157</FONT>          this.position = DONE;<a name="line.157"></a>
<FONT color="green">158</FONT>          return DONE;<a name="line.158"></a>
<FONT color="green">159</FONT>        }<a name="line.159"></a>
<FONT color="green">160</FONT>        final int retval = nextPosition();<a name="line.160"></a>
<FONT color="green">161</FONT>        if (retval == DONE)<a name="line.161"></a>
<FONT color="green">162</FONT>        {<a name="line.162"></a>
<FONT color="green">163</FONT>          return this.text.length;<a name="line.163"></a>
<FONT color="green">164</FONT>        }<a name="line.164"></a>
<FONT color="green">165</FONT>        return retval;<a name="line.165"></a>
<FONT color="green">166</FONT>      }<a name="line.166"></a>
<FONT color="green">167</FONT>    <a name="line.167"></a>
<FONT color="green">168</FONT>      /**<a name="line.168"></a>
<FONT color="green">169</FONT>       * Returns the text to be broken up.<a name="line.169"></a>
<FONT color="green">170</FONT>       *<a name="line.170"></a>
<FONT color="green">171</FONT>       * @return The text.<a name="line.171"></a>
<FONT color="green">172</FONT>       */<a name="line.172"></a>
<FONT color="green">173</FONT>      public String getText()<a name="line.173"></a>
<FONT color="green">174</FONT>      {<a name="line.174"></a>
<FONT color="green">175</FONT>        return new String(this.text);<a name="line.175"></a>
<FONT color="green">176</FONT>      }<a name="line.176"></a>
<FONT color="green">177</FONT>    <a name="line.177"></a>
<FONT color="green">178</FONT>      /**<a name="line.178"></a>
<FONT color="green">179</FONT>       * Sets the text to be broken up.<a name="line.179"></a>
<FONT color="green">180</FONT>       *<a name="line.180"></a>
<FONT color="green">181</FONT>       * @param text  the text.<a name="line.181"></a>
<FONT color="green">182</FONT>       */<a name="line.182"></a>
<FONT color="green">183</FONT>      public void setText(final String text)<a name="line.183"></a>
<FONT color="green">184</FONT>      {<a name="line.184"></a>
<FONT color="green">185</FONT>        this.position = 0;<a name="line.185"></a>
<FONT color="green">186</FONT>        this.text = text.toCharArray();<a name="line.186"></a>
<FONT color="green">187</FONT>      }<a name="line.187"></a>
<FONT color="green">188</FONT>    <a name="line.188"></a>
<FONT color="green">189</FONT>      /**<a name="line.189"></a>
<FONT color="green">190</FONT>       * Returns &lt;tt&gt;true&lt;/tt&gt; if the iteration has more elements. (In other<a name="line.190"></a>
<FONT color="green">191</FONT>       * words, returns &lt;tt&gt;true&lt;/tt&gt; if &lt;tt&gt;next&lt;/tt&gt; would return an element<a name="line.191"></a>
<FONT color="green">192</FONT>       * rather than throwing an exception.)<a name="line.192"></a>
<FONT color="green">193</FONT>       *<a name="line.193"></a>
<FONT color="green">194</FONT>       * @return &lt;tt&gt;true&lt;/tt&gt; if the iterator has more elements.<a name="line.194"></a>
<FONT color="green">195</FONT>       */<a name="line.195"></a>
<FONT color="green">196</FONT>      public boolean hasNext()<a name="line.196"></a>
<FONT color="green">197</FONT>      {<a name="line.197"></a>
<FONT color="green">198</FONT>        return (this.position != DONE);<a name="line.198"></a>
<FONT color="green">199</FONT>      }<a name="line.199"></a>
<FONT color="green">200</FONT>    <a name="line.200"></a>
<FONT color="green">201</FONT>      /**<a name="line.201"></a>
<FONT color="green">202</FONT>       * Returns the next element in the iteration.<a name="line.202"></a>
<FONT color="green">203</FONT>       *<a name="line.203"></a>
<FONT color="green">204</FONT>       * @return the next element in the iteration.<a name="line.204"></a>
<FONT color="green">205</FONT>       */<a name="line.205"></a>
<FONT color="green">206</FONT>      public Object next()<a name="line.206"></a>
<FONT color="green">207</FONT>      {<a name="line.207"></a>
<FONT color="green">208</FONT>        if (this.position == DONE)<a name="line.208"></a>
<FONT color="green">209</FONT>        {<a name="line.209"></a>
<FONT color="green">210</FONT>          // allready at the end ...<a name="line.210"></a>
<FONT color="green">211</FONT>          return null;<a name="line.211"></a>
<FONT color="green">212</FONT>        }<a name="line.212"></a>
<FONT color="green">213</FONT>    <a name="line.213"></a>
<FONT color="green">214</FONT>        final int lastFound = this.position;<a name="line.214"></a>
<FONT color="green">215</FONT>        int pos = nextWithEnd();<a name="line.215"></a>
<FONT color="green">216</FONT>        if (pos == DONE)<a name="line.216"></a>
<FONT color="green">217</FONT>        {<a name="line.217"></a>
<FONT color="green">218</FONT>          // the end of the text has been reached ...<a name="line.218"></a>
<FONT color="green">219</FONT>          return new String(this.text, lastFound, this.text.length - lastFound);<a name="line.219"></a>
<FONT color="green">220</FONT>        }<a name="line.220"></a>
<FONT color="green">221</FONT>    <a name="line.221"></a>
<FONT color="green">222</FONT>        // step one char back<a name="line.222"></a>
<FONT color="green">223</FONT>        if (pos &gt; 0)<a name="line.223"></a>
<FONT color="green">224</FONT>        {<a name="line.224"></a>
<FONT color="green">225</FONT>          final int end = lastFound;<a name="line.225"></a>
<FONT color="green">226</FONT>          for (; ((pos) &gt; end) &amp;&amp; ((this.text[pos - 1] == '\n') || this.text[pos - 1] == '\r'); pos--)<a name="line.226"></a>
<FONT color="green">227</FONT>          {<a name="line.227"></a>
<FONT color="green">228</FONT>            // search the end of the current linebreak sequence ..<a name="line.228"></a>
<FONT color="green">229</FONT>          }<a name="line.229"></a>
<FONT color="green">230</FONT>        }<a name="line.230"></a>
<FONT color="green">231</FONT>        //System.out.println ("text: " + new String (text));<a name="line.231"></a>
<FONT color="green">232</FONT>        //System.out.println ("pos: " + pos + " lastFound: " + lastFound);<a name="line.232"></a>
<FONT color="green">233</FONT>        return new String(this.text, lastFound, pos - lastFound);<a name="line.233"></a>
<FONT color="green">234</FONT>      }<a name="line.234"></a>
<FONT color="green">235</FONT>    <a name="line.235"></a>
<FONT color="green">236</FONT>      /**<a name="line.236"></a>
<FONT color="green">237</FONT>       *<a name="line.237"></a>
<FONT color="green">238</FONT>       * Removes from the underlying collection the last element returned by the<a name="line.238"></a>
<FONT color="green">239</FONT>       * iterator (optional operation).  This method can be called only once per<a name="line.239"></a>
<FONT color="green">240</FONT>       * call to &lt;tt&gt;next&lt;/tt&gt;.  The behavior of an iterator is unspecified if<a name="line.240"></a>
<FONT color="green">241</FONT>       * the underlying collection is modified while the iteration is in<a name="line.241"></a>
<FONT color="green">242</FONT>       * progress in any way other than by calling this method.<a name="line.242"></a>
<FONT color="green">243</FONT>       *<a name="line.243"></a>
<FONT color="green">244</FONT>       * @exception UnsupportedOperationException if the &lt;tt&gt;remove&lt;/tt&gt;<a name="line.244"></a>
<FONT color="green">245</FONT>       *    operation is not supported by this Iterator.<a name="line.245"></a>
<FONT color="green">246</FONT>       * @exception IllegalStateException if the &lt;tt&gt;next&lt;/tt&gt; method has not<a name="line.246"></a>
<FONT color="green">247</FONT>       *    yet been called, or the &lt;tt&gt;remove&lt;/tt&gt; method has already<a name="line.247"></a>
<FONT color="green">248</FONT>       *    been called after the last call to the &lt;tt&gt;next&lt;/tt&gt;<a name="line.248"></a>
<FONT color="green">249</FONT>       *    method.<a name="line.249"></a>
<FONT color="green">250</FONT>       */<a name="line.250"></a>
<FONT color="green">251</FONT>      public void remove()<a name="line.251"></a>
<FONT color="green">252</FONT>      {<a name="line.252"></a>
<FONT color="green">253</FONT>          throw new UnsupportedOperationException("This iterator is read-only.");<a name="line.253"></a>
<FONT color="green">254</FONT>      }<a name="line.254"></a>
<FONT color="green">255</FONT>    }<a name="line.255"></a>




























































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